Heating apparatus



June 19, 1945. DON F. JONES EI'AL HEATING APPARATUS Filed Aug. 15, 1942 2 Sheets-Sheet l June 19, 1945. DON F. JONES ETAL 2,378,485

HEATING APPARATUS Filed Aug. 15, 1942 2 Sheets-Sheet 2 Patented June 19, 1945- UNITED STATES PATENT orriciz I r Q nss'rm gzi mrus I v Don P. Jones, John mammalian-nun".

Micln, alsignors to Motor Wheel Cor- 1 Mick, a corporation o! l. poration', luring,

Michigan Application August 15. 1042,, Serial No. 454, 4

a Claims. (01. 126-99) 7 This invention relates to heating apparatus and more particularly to the other casings thereof.

The principal object of the invention is to provide a heater comprising a heat exchanger and an outer casing constructed so as to permit ready installation or removal of the heat exchanger.

Another object of the invention is to provide a heater or generally rectangular horizontal cross-section so constructed that the circulation of air therethrough is substantially uniiorm about the heat exchanger. v

For o'more thorough understanding of the invention and the objects thereof reference is made to the accompanying drawings, wherein:

Figure 1 is a front elevational view oi a furnace embodying the invention;

Figure 2 is a cross-sectional view of the same taken on substantially the line 22 of Figure 1;

Figure 3 is a front elevationalview of the furnace with the front panel removed;

Figure 4 is a cross-sectional view taken on substantially the line 4-4 of Figure 2; and

Figure 5 is a fragmentary cross-sectional view similar to Figure 4 showing the furnace in condition ready for removal of the heat exchanger.

chamber shell it formed o sheet :metal and closed at the ends by top and bottom walls it and M respectively. An oil burner i5 01- the vaporizing pot type is located in the lower portion of the heat chamber shell. The upper part oi the he'at chamber shell I! constitutes a combustion.

. II for admission oi.' air to the burner, for access to the chamber and interior .ofthe burner. aud tor the escape of products or com- .bustion, respectively. All three openings are surrounded by flanged collars ls. mend-1| respecheat exchanger rests on the latter and is removably secured thereto by bolts or'screws. v

The 'outer casing III is rectangular in plan. The outer casing comprises four upright comer posts 29, a top frame ",two side panels ii, a

front panel 32 and a bacls'panel 33.. The corner posts I! are oi generallyarcuate cross-section (Figures 4 and 5) and are provided with inwardly oflset flanges u at their upright edges forming rabbets 34. The'top frame 30 has depending flanges 35 also forming .rabbets, and is provided with an opening 38 to permit air to rise upwardly therethrough. The corner posts 28 are secured at their lower ends to the base 23 and at their upper ends to the corners of the top frame 30.

The height 'of the cornerposts and the lateral spacing of the front corner posts are such as to provide an opening in the front of the casing of greater, vertical and horizontal extent than the heat exchanger i I. (See Figure 3).

The panels II, 32 and 33 .are. rectangular and are provided with peripheral flanges 31 extending inwardly therefrom. The panels are of a size to fit within the rahlzuats 34 in the corner posts andthe top frame and fillthe openings between I the corner posts. All of panels are provided adjacent their lower ends. withz shaped clips 38 which hook over the uPStanding -fiangeson theside members.= 2lqf the base 23. The upper ends ot the panels have openings therein registering with similar openings .in then-flanges 3 5 for the reception of hardenedscrews 39. Aliof the panels II, and 33 vare attached to the rest oi' the outer casins by hooking the clips 381-over the upper ends of the panels against the flanges 7 35V where they are iastenedby the-screws Iii.v

The front panel 32 has a; circular. opening therein-receiving a; sleeve flanged-shits outer end., The sleeve 40 telescopes; over theicollar 20.

Another opening below-the sleeve-All registers with opening Wand receives a 'sleeve 41-: .The

sleeve 4| is flanged at its outer; end-"and' telescopes over, the: collar ll.- sleeves are: fastened to. the panel 2 32' by screwsfltpassing through the .;flanged ends thereof. w [Access to closure-.222 is obv tained through sleeve llwhile'sleeve ll' and-coltiv'ely. for a so that will appear presently. Opening provided with aclosure 22 iorclose. Y in: the same.

The heat exchanger II is mounted .on abuse I 9 provide apassageway for-air to the bum- A door, I is hinged to the frontconcealathe openings lland I I-and sleeves land I. The door 43 ls'provided with louvers 44 to admit air to the sleeve ti and thence to the burner II.

The air stop It is secured to the outer casing above the base and near the upper end of the burner.' It supports the lining II in a manner to be described presently. The air stop is composed of four separate pieces or baiiies l5, All of the bullies aresubstantlally identical. They are identical if the outer casing is square. otherwise the front and back bafiles vary in length from the side bailles. Each bai'lie is notched at three places 46, H and II to fit around the flanges BI and 34. Each baflle is shaped at one end to conform to the cross-sectional contour of the corner osts. The other end of each baiile terminates short of the adjacent corner post. All bafllesoverlap each other and are secured together by screws ll. The inner peripheral edges or the bailles are provided with upstanding flanges which together form a substantiall, continuous cylindrical flange defining a circular opening 6| receiving the heat exchanger II.

An ngle member 28a is secured to each side 3| on which the air stop 28 is mounted. One flange of each angle member 280 is welded or otherwise secured tothe corresponding panel 3i while the other flange projects laterally inward.

The two side'bailles I! rest upon the horizontal flanges of the angle members No and may be secured thereto by bolts or screws 28!). The front and rear baiiies 45 re indirectly supported on angle members ila through their connection with the side baflles 45.

The lining 21 preferably is a single sheet of metal coiled into a cylindrical tube. It is of lesser vertical extent and of greater horizontal extent than the opening in the front of the heater. The upright edges of the lining overlap at 52 and are so arranged that the Joint occurs adjacent one upright side of the opening in the front of the casing formed when the panel 32 is removed. The edges of the lining are held in that position by bolts 53 inserted through angle clips 54 welded to the lining. The lining is coiled about the flanges 50 on the baiiles 45 and tightened thereagainst by the bolts II. The upper end of the lining is open, but is maintained in circular shape by a ring 55 of angular cross-section inserted therein. I

The lining 21 is provided with two circular openings 6i and 62 to receive the sleeve Ill and a flue outlet 63 respectively. The flue outlet 63 is connected to the collar II by telescopic engagement therewith.

A fuel regulating device 58 is mounted on a bracket 51 secured to the front panel 32. The fuel regulating device is connected by a conduit 58 to the burner i5. Preferably the conduit is removably connected to both the fuel regulating device and the burner by means of threaded couplings 59 and Bil.

when it becomes necessary to remove the heat exchanger for replacement or repair, the fuel regulating device 56 is disconnected from the conduit 58. The screws 38 at the top of the front panel 32 are then removed. The top of the panel 32 is tilted outwardly suillciently to pull the sleeves 40 and I from the respective collars 20 and- IS and the panel lifted to release the clips 38 from the base 22. The two screws 49 at the front of the air stop which connect the front baflle Ii to the two side bailles are removed. Then the bolts 53 are removed from the clips 54 and the front portion of the lining pulled out through the opening in the front of the casing, as shown in Figure 5. This can be done because the joint-in the lining is adjacent the asvaesa opening in the front of the heater casing, and the lining is of less height, than the opening. The front bail'ie I5 is lifted out. This procedure leaves an unobstructed opening through the easing large enough to permit the passage therethrough of the heat exchanger. The latter can then be disconnected from the base and removed bodily from the casing. It can be reinstalled or replaced by reversing the above described proce-' dure.

From the foregoing it will be seen that the invention provides for ready installation of the heat exchanger in the casing, or the removal thereof for replacement or repair. The casing need not be dismantled to obtain access to the heat exchanger.

Furthermore, the provision of the cylindrical lining and air stop keeps the outer shell cool and maintains a' uniform circulation or air about the heat exchanger. This result is due to the fact that the annular space about the heat exchanger is of uniform radial width. If the lining were not employed the air in the corners of the shell would not be heated as much as elsewhere with-- in the shell and would not circulate upwardly in the same manner as the more highly heated air.

The scope oi the invention is indicated in the appended claims. a

We claim:

1. In a heater, a unitary heat exchanger, an outer casing surrounding the heat exchanger in spaced relation thereto, one upright side of said casing including a panel detachable from the rest of the casing to provide an opening through which said heat exchanger can be' bodily removed, and a tubular lining surrounding the upright sides of the heat exchanger in spaced relation thereto and to the sides of the casing, said 'lining having a portion thereof movable to provide an opening in registry with said opening in the casing to permit removal of the heat exchanger from the heater.

2. In a heater, a unitary heat exchanger, an

outer casing surrounding the heat exchanger in spaced relation thereto, one upright side of said casing including a panel detachable fromthe rest of the casing to provide an opening through which said heat exchanger can be bodily removed, and a tubular lining surrounding the upright sides of the heat exchanger in spaced relation thereto and to the sides of the casing, said lining having a portion thereof movable to provide an opening in registry with said opening in the casing to permit removal of the heat exchanger from the heater, and supporting means for the lining mounted on the side of the casing.

3. In a heater, a unitary heat exchanger, an outer casing surrounding the heat exchanger in spaced relation thereto, one upright side of the casing including a panel detachable from the rest of the casing to provide anopening through which the heat exchanger can be bodily removed, a tubular lining surrounding the upright sides of the heat exchanger in spaced relation thereto and to the sides of the casing, said lining having a portion movable to provide an opening in registry with said opening in the casing, the lowerend of the lining terminating above the lower end of the opening, and bailie means between the lower end of the lining and the sides of the casing for preventing the circulation of air between the lining and the casing. a portion of said baflle means being removable to permit removal of the heat exchanger from the heater.

ate-ram 4. Inaheatengheatexchangenacasingsurrounding the heat exchanger in spaced relation thereto, the casing having a section thereof movable to provide an opening in the side thereof, and a liner interposed between the sides of the heat exchanger and the casing in spaced relation to the heat exchanger, the liner having a section thereof movable to provide an opening inregistry with the opening inthe casing. the openings in said casing and liner being of such size as to permit removal and installation of the heat exchanger therethrough.

5. In a heater as defined in claim 4 wherein a portion of the movable section of the liner is adapted to extend through the opening provided in the casing by the movable section thereof.

8. In a heater as defined in claim 4 wherein the liner consists of a single sheet of metal coiled into the shape of an open ended tube with its adjacent edges detachably connected together.

7. In a heater, a casing having an opening in one side thereof, closure means for said opening mounted on said casing, and a lining disposed within the casing, said lining comprising a sheet of metal coiled into tubular form and having its adjoining edges detachably connected to each othentheaxialextentofsaidliningbeingless than the corresponding dimension of the opening said lining being arranged within the casing with the said adjoining edges disposed adjacent said opening whereby upon disconnecting said edges from each other a portion of the lining may be swung through the opening.

8. In a heater, a casing having an opening in one side thereof, closure means for said opening mounted on said casing, and a lining disposed within the casing, said lining comprising a sheet of metal coiled into tubular form and having its adjoining edges detachably connected to each other, the axial extent of said lining being less than the corresponding dimension of the opening and the radial extent of the lining being greater than the corresponding dimension of the opening, said lining being arranged within the casing with the said adjoining edges disposed adjacent said opening whereby upon disconnecting said edges from each other a portion of the lining may be swung through the opening.

DON F. JONES. JOHN W. MILLER. BASIL D. FIGG.

CERTIFICATE OF CORREC TI ON.

Patent No 2, 78,LL85;

June 19 191.;5.

DON F. JONES, ET AL.

It is hereby certified that error ap of the above numbered patent requiring correction as column, line 2, for the word line 10,

should 1 the race Signe (Seal) for the numeral "514." read 57--, 0 read with this correction therein rd of the case in the Patent Office. d and. sealed this 9th day ofOctoher,

"other" read --outer--; I

- and that the said Letters Patent that the same may conform to follows: Page 1, first page 2, first column,

Leslie Frazer First Assistant Commissioner of Patents.

ate-ram 4. Inaheatengheatexchangenacasingsurrounding the heat exchanger in spaced relation thereto, the casing having a section thereof movable to provide an opening in the side thereof, and a liner interposed between the sides of the heat exchanger and the casing in spaced relation to the heat exchanger, the liner having a section thereof movable to provide an opening inregistry with the opening inthe casing. the openings in said casing and liner being of such size as to permit removal and installation of the heat exchanger therethrough.

5. In a heater as defined in claim 4 wherein a portion of the movable section of the liner is adapted to extend through the opening provided in the casing by the movable section thereof.

8. In a heater as defined in claim 4 wherein the liner consists of a single sheet of metal coiled into the shape of an open ended tube with its adjacent edges detachably connected together.

7. In a heater, a casing having an opening in one side thereof, closure means for said opening mounted on said casing, and a lining disposed within the casing, said lining comprising a sheet of metal coiled into tubular form and having its adjoining edges detachably connected to each othentheaxialextentofsaidliningbeingless than the corresponding dimension of the opening said lining being arranged within the casing with the said adjoining edges disposed adjacent said opening whereby upon disconnecting said edges from each other a portion of the lining may be swung through the opening.

8. In a heater, a casing having an opening in one side thereof, closure means for said opening mounted on said casing, and a lining disposed within the casing, said lining comprising a sheet of metal coiled into tubular form and having its adjoining edges detachably connected to each other, the axial extent of said lining being less than the corresponding dimension of the opening and the radial extent of the lining being greater than the corresponding dimension of the opening, said lining being arranged within the casing with the said adjoining edges disposed adjacent said opening whereby upon disconnecting said edges from each other a portion of the lining may be swung through the opening.

DON F. JONES. JOHN W. MILLER. BASIL D. FIGG.

CERTIFICATE OF CORREC TI ON.

Patent No 2, 78,LL85;

June 19 191.;5.

DON F. JONES, ET AL.

It is hereby certified that error ap of the above numbered patent requiring correction as column, line 2, for the word line 10,

should 1 the race Signe (Seal) for the numeral "514." read 57--, 0 read with this correction therein rd of the case in the Patent Office. d and. sealed this 9th day ofOctoher,

"other" read --outer--; I

- and that the said Letters Patent that the same may conform to follows: Page 1, first page 2, first column,

Leslie Frazer First Assistant Commissioner of Patents. 

